{"id":"CVE-2007-0021","aliases":["EUVD-2007-0025","GHSA-4c3v-jr8f-g5h4"],"status":"published","title":"Format string vulnerability in Apple iChat 3.1.6 allows remote attackers to cause a denial of...","description":"Format string vulnerability in Apple iChat 3.1.6 allows remote attackers to cause a denial of service (null pointer dereference and application crash) and possibly execute arbitrary code via format string specifiers in an aim:// URI.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.23688,"percentile":0.97829,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2007-01-23T00:00:00Z","modified":"2026-06-16T22:34:43Z","exploits":[{"source":"exploitdb","id":"EDB-3166","title":"Apple iChat 3.1.6 441 - 'aim://' URL Handler Format String (PoC)","type":"dos","platform":"osx","date":"2007-01-21","verified":true,"url":"https://www.exploit-db.com/exploits/3166"}],"products":[{"vendor":"apple","product":"ichat"}],"references":[{"url":"http://lists.apple.com/archives/Security-announce/2007/Feb/msg00000.html","tags":["vendor-advisory","x_refsource_APPLE","x_transferred"]},{"url":"http://projects.info-pull.com/moab/MOAB-20-01-2007.html","tags":["x_refsource_MISC","x_transferred","Exploit","Vendor Advisory"]},{"url":"http://www.us-cert.gov/cas/techalerts/TA07-047A.html","tags":["third-party-advisory","x_refsource_CERT","x_transferred","US Government Resource"]},{"url":"http://secunia.com/advisories/24198","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"http://www.securitytracker.com/id?1017661","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/31679","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.vupen.com/english/advisories/2007/0274","tags":["vdb-entry","x_refsource_VUPEN","x_transferred"]},{"url":"http://www.kb.cert.org/vuls/id/794752","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","US Government Resource"]},{"url":"http://docs.info.apple.com/article.html?artnum=305102","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.securityfocus.com/bid/22146","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://osvdb.org/32715","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2007-0021"},{"url":"https://github.com/advisories/GHSA-4c3v-jr8f-g5h4"}],"sources":{"cve":[{"id":"CVE-2007-0021","description":"Format string vulnerability in Apple iChat 3.1.6 allows remote attackers to cause a denial of service (null pointer dereference and application crash) and possibly execute arbitrary code via format string specifiers in an aim:// URI.","status":"published","published":"2007-01-23T00:00:00Z","modified":"2024-08-07T12:03:37.065Z","updated_at":"2026-11-02T13:34:03.879328Z"}],"euvd":[{"id":"EUVD-2007-0025","description":"Format string vulnerability in Apple iChat 3.1.6 allows remote attackers to cause a denial of service (null pointer dereference and application crash) and possibly execute arbitrary code via format string specifiers in an aim:// URI.","status":"published","published":"2007-01-23T00:00:00Z","modified":"2024-08-07T12:03:37Z","updated_at":"2026-11-03T01:38:32.139738Z"}],"ghsa":[{"id":"GHSA-4c3v-jr8f-g5h4","title":"Format string vulnerability in Apple iChat 3.1.6 allows remote attackers to cause a denial of...","description":"Format string vulnerability in Apple iChat 3.1.6 allows remote attackers to cause a denial of service (null pointer dereference and application crash) and possibly execute arbitrary code via format string specifiers in an aim:// URI.","status":"published","published":"2022-05-01T17:41:20Z","modified":"2023-01-31T05:02:49Z","updated_at":"2026-11-02T14:48:20.320447Z"}],"nvd":[{"id":"CVE-2007-0021","description":"Format string vulnerability in Apple iChat 3.1.6 allows remote attackers to cause a denial of service (null pointer dereference and application crash) and possibly execute arbitrary code via format string specifiers in an aim:// URI.","status":"published","published":"2007-01-23T00:28:00Z","modified":"2026-06-16T22:34:43.377Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:01:11.752648Z"}]}}